Tracks are basically like the annual rings on a cut tree. So if you can make the extra effort, then by all means please read through this part and try to understand the extremely technical terminology that is going to follow here. There are two reasons why I’m including this info in my article – it may help create a picture in your mind showing how data is stored on your hard drive, and these are also terms that are frequently used in defragmentation software. If this seems like too much information to take in, then don’t worry about it. The disk surface is subdivided into sectors and tracks (see picture below). Instead of going into detail talking about how exactly the read-write head moves (using terms like “angular velocity”, “seek time” and such), I will just state a fact you will need to remember – in terms of data access speed, the outer part of the hard drive platter, also referred to as the front of the drive, is the fastest, while the inner part, or the back of the drive, is the slowest. This is what it looks like inside your computer:Įvery time you open a file (or the system tries to access a file), the CPU sends the request to your hard drive and the read-write head starts moving to retrieve the requested data.
Your HDD (hard disk drive) is the slowest part of your computer, because it contains moving parts – spinning platters and the read-write head.
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